Ivar KJELBERG
COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted:
1 decade ago
14.12.2012, 01:09 GMT-5
Hi
search on the Forum, there are already several examples around
--
Good luck
Ivar
Hi
search on the Forum, there are already several examples around
--
Good luck
Ivar
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
14.12.2012, 03:11 GMT-5
Hi Ivar,
Hope you can help.I am new in with the software and not familiar with electrical set-up. I make a simple 2D rectangular cell which 2 sides contains of aluminum electrodes. I want to applied VCCS (10V, 0.01A) to one of the electrode while the other electrode I want to connect with 1000k resistance and measure the voltage across the resistance. In the 2D model I use the electric circuit(cir) and electric current(ec). I have tried many times but still confusing about the nodes pair in VCCS. However I tried to applied 0.01A to the model.The setting window the setting of nodes and values are as follows.
electric circuit:
ground node 0
current source 1 0 ; 0.01A
external I-terminal terminal voltage (ec/term1)
resistor 1k 2 0
electric current:
terminal 1 boundary=3 terminal name=1 terminal type=circuit
terminal 2 boundary=2 terminal name=2 terminal current=circuit
ground 0
I selected water as medium inside the rectangular. After computing this error occurs:
DAE is structurally inconsistent
variables:1
equation:0
can you please comment what I am doing wrong here and If I want to replace the current source with the VCCS how to connect them to the electrode.
Regards
Fazlul
Hi Ivar,
Hope you can help.I am new in with the software and not familiar with electrical set-up. I make a simple 2D rectangular cell which 2 sides contains of aluminum electrodes. I want to applied VCCS (10V, 0.01A) to one of the electrode while the other electrode I want to connect with 1000k resistance and measure the voltage across the resistance. In the 2D model I use the electric circuit(cir) and electric current(ec). I have tried many times but still confusing about the nodes pair in VCCS. However I tried to applied 0.01A to the model.The setting window the setting of nodes and values are as follows.
electric circuit:
ground node 0
current source 1 0 ; 0.01A
external I-terminal terminal voltage (ec/term1)
resistor 1k 2 0
electric current:
terminal 1 boundary=3 terminal name=1 terminal type=circuit
terminal 2 boundary=2 terminal name=2 terminal current=circuit
ground 0
I selected water as medium inside the rectangular. After computing this error occurs:
DAE is structurally inconsistent
variables:1
equation:0
can you please comment what I am doing wrong here and If I want to replace the current source with the VCCS how to connect them to the electrode.
Regards
Fazlul
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
14.12.2012, 11:31 GMT-5
Hi,
Regarding my previous problem, I have reconstructed the previous 2D model but this time using the VCCS. The parameters are as written below;
Electric circuit
VCCS
1 gain=0.001
0
4
0
Voltage source
4 DC=1V
0
Resistor
4 1kohm
0
Ext.I –terminal 1 terminal voltage (ec/term1)
Resistor
2 1kohm
0
Ext.I vs U
2 terminal voltage(ec/term2)
0
Electric current
Terminal 1 terminal name:1 type: circuit
Terminal2 terminal name;2 type :circuit
Simulation of the model contains no error. However I noticed that the potential at terminal 1 is -180V and terminal 2 is -1.881V. My question is - what am I doing wrong here. Please advice.
Regards
Fazlul
Hi,
Regarding my previous problem, I have reconstructed the previous 2D model but this time using the VCCS. The parameters are as written below;
Electric circuit
VCCS
1 gain=0.001
0
4
0
Voltage source
4 DC=1V
0
Resistor
4 1kohm
0
Ext.I –terminal 1 terminal voltage (ec/term1)
Resistor
2 1kohm
0
Ext.I vs U
2 terminal voltage(ec/term2)
0
Electric current
Terminal 1 terminal name:1 type: circuit
Terminal2 terminal name;2 type :circuit
Simulation of the model contains no error. However I noticed that the potential at terminal 1 is -180V and terminal 2 is -1.881V. My question is - what am I doing wrong here. Please advice.
Regards
Fazlul